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I use mainly rainwater for my water changes on my sumped system, and every winter I have the same problem. Plenty of rainwater in the tanks, but no sun available many days to heat the solar panels I have on the fishroom roof to heat the water as I pump it through on the way to the sump. So I end up using the house hot water, which impacts on both the power and water bills.
Recently it occurred to me that I heat my fishroom during the winter and have space available on top of one of my stands. So I thought, why not get a flat water tank to sit up there, pump the cold rainwater into it, and after a day or two in the heated fishroom, it should be warm enough to use for water changes. However, after googling I found that all the commercially available flat water tanks are either too wide or too high to fit in the space I have available.
So then I found this guy :
http://www.abbertanks.com.au/
He makes custom sized water tanks out of food grade polypropylene, usually for commercial and recreational vehicles. He can make a tank any size and shape you want and fit it with female 3/4" BSP poly fittings so you can add inlet, outlet and breather fittings. I got him to add an additional one for me at the bottom underneath the inlet and I put an elbow on this one with a piece of clear tube running up to the top so I can see how full it is. The tanks he makes are made for vehicles which move, so are fitted with baffles to prevent the water sloshing around. This makes them very strong. And they are light. Mine holds over 1,000 litres and weighs less than 30kg.
So after laying a piece of 19mm form ply for it to sit on, and a test fill which confirmed no leaks, I now have the capacity to have over 1,000 litres of water available constantly for water changes during the cooler weather. And I was very happy with the price I negotiated with Chris at Abber Tanks, I thought it was very fair for a custom job. He is located at Burpengary northside of Brisbane, so I was able to go for a drive with my mate with the ute and pick it up, although Chris can arrange transport anywhere.
May not be the solution for everyone, but if you heat your fishroom during the cooler months and have an odd sized space available, it may work for you.
Cheers, Doug

I was googling how to manually hatch fish eggs and found a video where they put some killifish eggs in a Petrie dish in a saline solution of some sort and they hatched within 30 seconds.
I was just wondering if anyone else has experience with this?
I got 60 fry naturally - the ones that got eaten
I've been using a turkey baster to make them hatch for the last two days and I would say I have about 80 more (you can see a couple of 2-3 day old ones top right)
There still seems to be plenty of sets of eyes
They are attached to a log so I would have to get them off the log first. Any ideas?
Or should I be more patient and just leave them to hatch?
They are desert gobies
Sent from my iPhone using Tapatalk

So just thought I would give a suggestion to anyone who has an outbreak of black beard algae, which I too recently had. Just over a week ago I purchased a gold spot plec and to my amazement, after reading up about the algae and how hard it is to get rid of, my plec has gone and demolished just about every bit from my fake plants to the whole 3D background of my tank, so if you don't have a plec but have the algae I would highly think about getting one and giving it a go. I am actually going to have to buy some food for him now not sure if this was helpful info/ old info but I thought I may aswell put it out there
Sort of down side there are nearly 10 cm long black plec poos everywhere haha

I am trying to track down anyone in Australia that can sell me small orders of 20ml ph calibration packets. I was using the "Pinpoint" brand that the Reef Shop sold but they never seem to have stock and i have had some bad episodes of placing back orders and waiting for too long so want to find a place that has regular stock levels and moves plenty so they have not used up their shelf life, and for the same reason i prefer packets over the plastic bottles, i never go through them fast enough and don't trust the last half. The packets work good from my experience but they are becoming harder to find fresh stock. Any online places in Aus would be good.